Sign post



FIG. 1 is a perspective view from the front of a first embodiment of a sign post embodying my design.

FIG. 2 is a perspective view from the rear thereof.

FIG. 3 is another perspective view from the rear thereof.

FIG. 4 is a fragmentary enlarged perspective view from the front thereof; and,

FIG. 5 is a further fragmentary enlarged perspective view from the front thereof. 

CLAIM The ornamental design for a sign post, as shown. 